cardiac embolism symptoms

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Can symptoms of pulmonary embolism (chest tightness, heart palpitations) come and go, or will they be constant if it's a dangerous PE clot?

Yes

Chest
Many causes however, so exam and testing is required to be definitive. Small recurrent emboli are known and can be intermittent and variable, and eventually lethal.
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Dr. Jerry Light answered:

Can a low heart cause pulmonary embolism?

No

Rapid_heart_beat
I'm guessing that you mean a heart that lays low in the chest. This would not cause pulmonary embolism; in fact the position of the heart would have no effect on pulmonary embolism, which is caused by clots in veins (usually in the legs or pelvis) breaking loose and traveling to the lung.
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Difference between pulmonary embolism and heart attack?

Vast

Lung
Pulmonary embolism is the blockage of the pulmonary artery branches by clot, most commonly from the legs. Causes lung dysfunction and heart failure sometimes death. Heart attack (myocardial infarction) is the result of a blockage of the coronary (heart) artery with resultant death of a portion of the heart muscle. Result is heart dysfunction/failure/arrest and even death.
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Dr. David Fertel answered:

What makes pulmonary embolism cause increased heart rate?

Lake of oxygen

Embolus
heart is trying to compinsate.
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Dr. Sue Ferranti answered:

Does a change in heart rate occur with pulmonary embolism?

Sometimes...

Heart
People with PE can be asymptomatic. If the heart rate is affected, it usually goes up causing s rapid heart rate. If a person thinks they have a PE, they need to be evaluated at an ER as PE can be life-threatening.
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Why does pulmonary embolism cause your increased heart rate?

Stress

Blood_pressure
Pul. Embolism is a kind of obstructing shock. So it decrease blood to of side of heart and that decrease blood pressure sometime. Body defense to this is to increase heart rate. It also increase stress on rt side of heart.
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Any ideas why pulmonary embolism causes increased heart rate?

Nerves and reflexes

Respiratory
pulmonary embolism causes obstruction to blood flow and oxygenation. This causes fight or flight reactions, fear, etc, and the hormones released cause tachycardia. The stretch on the right side of the heart also causes the release of BNP causing also tachycardia. The stretch on the right side of the heart allows many mechanisms including reentry and may even cause irreg HR.
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Does your heart rate go up rapidly during amniotic-fluid embolism?

Yes and then you die

Open-uri20120801-1323-1jufxyk
AFE is a very rare but frequently lethal condition for the parturient. Unheralded cardiovascular collapse and disseminated intravascular coagulation are the main manifestations and can prove lethal very quickly even with expert care.
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Dr. Mark Rasak answered:

Is having a pulmonary embolism the same thing as having a heart attack?

No

Blood
a pulmonary embolism is a blood clot that travels to the lungs and a heart attack is a ruptured plaque in the coronary artery wth a clot .
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Does your heart rate go up rapidly or down during amniotic-fluid embolism?

Up

Embolus
Generally up because of the significant vascular response, vascular dilation and the heart trying to compensate, there is a 50% mortality and those who do not die are in the ICU because they almost died, it's horrible. If you are considering that you have this problem currently, well, you wouldn't be able to write this.
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